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raw [2020/05/05 02:27] – [strides and offsets] yairraw [2021/02/13 21:49] (current) – yair
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 ====GRAY8 vs RTP==== ====GRAY8 vs RTP====
 **problem**: \\ **problem**: \\
-single plane raw formats are not part of [[https://tools.ietf.org/html/rfc4175|rfc4175]], and as such 2nd class citizens to gstreamer, RTSP and [[https://linuxtv.org/downloads/v4l-dvb-apis/uapi/v4l/pixfmt-grey.html|anywhere]]. +single plane raw formats are not part of [[https://tools.ietf.org/html/rfc4175|rfc4175]], and as such 2nd class citizens to gstreamer, RTSP or [[https://linuxtv.org/downloads/v4l-dvb-apis/uapi/v4l/pixfmt-grey.html|anywhere]] else. 
  
 **solution**: \\ **solution**: \\
-a image formats are **just a convention**, internally they are byte(octet) streams. we can re-package a datastream to another format, as long as we mind our strides. +an image format is **just a convention**, internally they are byte(octet) streams. we can re-package a datastream to another format, as long as we mind our strides. 
  
 view the image format as just a stream of octets. here is our stream in Y8 format view the image format as just a stream of octets. here is our stream in Y8 format
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 and YUV doesnt use the entire 0-255 space. [[https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/issues/738|issue]] and YUV doesnt use the entire 0-255 space. [[https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/issues/738|issue]]
  
 +**note2**: this example is running on linux/debian, \\
 +to adapt to windows using powershell replace ''\'' with ''`'' and \\
 +place quotes around  ''video/x-raw, format=GRAY8, width=4, height=4''